A hybrid FE-based predictive framework for ASR-affected structures coupled with accelerated experiments

Engineers are often confronted with the challenge of performing a rigorous safety assessment of concrete structures affected by alkali silica reaction (ASR). Such an endeavor is often accompanied by accelerated expansion tests to simulate the aging process. This paper proposes an integrative framework to link test results with finite element analyses in order to predict future response. This hybrid approach is further enhanced through a probabilistic framework. As a vehicle for this approach, tests performed on large reinforced concrete panels subjected to accelerated ASR expansion are used, and predictive response made through an uncertainty quantification paradigm. Finally, safety is quantified through developed fragility functions. The proposed methodology could be expanded as a prognosis tool to other applications where future response of ASR affected structures is sought.